Here is what I found for the KO3’s:

LT255/60R20 Diameter 32” Width 10.2” Revolutions per mile 649 Weight 53 lbs

LT275/55R20 Diameter 31.9” Width 10” Revolutions per mile 652 Weight 55 lbs

 

I can't keep track of who's looking for tires or just offering ideas but I also used to have the obsession with the BFG AT Ko but am incredibly pleased with my new choice, the Nokian Outpost NAT. You can get it in a perfect Defender 32.5" size of 265/60-20 in E load range and they have their "Kevlar" sidewall technology.

I really can't express how much I am liking these and I've used all 3 generations of the BFG.

https://na.nokiantyres.com/all-terra...s-outpost-nat/

Winter test against true winter Nokians:

Good real-world experience review:
https://gearjunkie.com/motors/nokian...ost-nat-review

Mine :